NetComm NB6 User Manual page 62

As you can see above, the range for Peak Cell Rate is from 1 to 2500; the value for Sustainable Cell Rate
ranges from 1 to 2499 and must be smaller than Peak Cell Rate, and the range for Maximum Burst Size
is from 1 to 1000000.
After pressing "Next", you will see the web page below. Choose the protocol that you would like to
use. (Here provides the example for PPPoA.)
Please refer to Quick Setup for more information if you don't know how to set the configuration.
You can check Enable QoS to improve performance for selected applications. More detailed
information for QoS will be introduced in later instruction.
If you choose PPPoE (or Bridging), you will see the option for 802.1Q VLAN Tagging.
802.1Q VLAN Tagging:
NOTE: This option is not available on the NB6
802.1Q-compliant switch ports can be configured to transmit tagged or untagged frames. A tag field
containing VLAN (and/or 802.1p priority) information can be inserted into an Ethernet frame. If a port
has an 802.1Q-compliant device attached (such as another switch), these tagged frames can carry
VLAN membership information between switches, thus letting a VLAN span multiple switches.
However, it is important for network administrators to ensure ports with non-802.1Q-compliant
devices attached are configured to transmit untagged frames. Many NICs for PCs and printers are not
802.1Q-compliant. If they receive a tagged frame, they will not understand the VLAN tag and will drop
the frame. Also, the maximum legal Ethernet frame size for tagged frames was increased in 802.1Q
(and its companion, 802.3ac) from 1,518 to 1,522 bytes.
After checking Enable 802.1Q VLAN Tagging, you will have to enter a VLAN ID, as shown.
VLAN ID:
The VLAN Identifier is a 12 bit field. It uniquely identifies the VLAN to which the frame belongs to and
can have a value between 0 and 4095.